About the I-5 Corridor Improvement Project

Over the next five years, Caltrans is investing $2.9 billion to improve southern segments along the Santa Ana Freeway (I-5) between the Orange County line and the San Gabriel River Freeway (I-605) and northern segments along the Golden State Freeway (I-5) from the Ventura Freeway (SR-134) to the Kern County line. Improvements will enhance safety, improve traffic flow, reduce congestion, encourage ride sharing, decrease surface street traffic and help improve air quality.

High-Occupancy Vehicle (HOV or carpool) Lanes
Carpool lanes for vehicles with two or more passengers

Funding Partners

Five Year I-5 South & North Construction Projects

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I-5 South Improvements

The I-5 South construction projects will be completed in 2017 improving traffic flow, reduce congestion, enhance safety, decrease surface street traffic and improve air quality. For a description of each project, click here.

Start: Late 2013Completion: Late 2016

Cost: $1.6 billion

I-5 North Improvements

The I-5 North construction projects will be completed in 2017 improving traffic flow, reduce congestion, enhance safety, decrease surface street traffic and improve air quality. For a description of each project, click here.